my $outer = 1; # lexical file scope
{
  my $inner = 1;
  # here I can see both $inner and $outer
  # as $outer is "inherited" from the outer
  # lexical scope
  {
    my $inner = 2; 
    # this $inner is completely different $inner
    # than the $inner in the direct outer scope
    # but still I can see $outer
  }
  # now I can see $inner that is equal to 1
}
# now I can see only $outer